In the same way Kava seems to have missed the New Caledonia, The Solomon Islands also have only passing acquaintance to kava. To this day most botanists concur no native kava species have been found. Beyond that, it is not consumed in any contemporary capacity anywhere in the archipelago.

There is an ongoing debate on kava being used in the past. There are reports of kava consumption in the far southern islands of Vanikoro, Utupua, and Santa Cruz, but these reports have been openly disputed. If these reports are true, they were most likely temporary transplants from the near by island of Samoa and Tonga, and the populations have subsequently become extinct.

One particular report form the island of San Cristobal of ceremonial kava usage during burials is of note. It is reported that during the ceremony men ground up the root in a stone basin, wrung it out, and consumed it in a small cup. Although there is a debate as to this being kava or the root of another plant P. wichmannii native to the rain forests, it is possible that this was P. methysticum brought back by Solomon Islanders who worked on Fijian plantations. Kava consumption stood in direct opposition to the powerful Anglican missionaries who were prevalent in the area. If this was kava, more than likely the missionaries rooted out and eradicated any populations.

Source: KavaDotCom